Answer:
It regulates our daily movements, but it feels no interest in our lives. It directs us when to come and go, but does not care if we pay attention. What is it?
A great mysterious place that the bold have been known to journey into.
I can be written, I can be spoken, I can be exposed, I can be broken.
What month of the year has 28 days?
A skin have I, more eyes than one. I can be very nice when I am done.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?